On a smaller scale, to link up a few datacenters that are a few miles apart? Sure. On a grand scale though, no. Nobody's running an extra undersea cable from Ja

On a smaller scale, to link up a few datacenters that are a few miles apart? Sure. On a grand scale though, no. Nobody's running an extra undersea cable from Japan to Singapore so that they can have a ring topology. Or trenching a second PBps of cables across the Appalachian Mountains. When something like that gets busted you go and reroute your least important traffic and send out the repair crew.